Can I eat quinoa?

. . . or beans, or brown rice, or sweet potatoes? Or how about amaranth, sorghum, oats, and buckwheat? Surely corn on the cob is okay!

These are, of course, non-wheat carbohydrates. They lack several crucial undesirable ingredients found in our old friend, wheat, including no:

Gliadin--The protein that degrades to exorphins, the compound from wheat digestion that exerts mind effects and stimulates appetite to the tune of 400 additional calories (on average) per day.
Gluten--The family of proteins that trigger immune diseases and neurologic impairment.
Amylopectin A--The highly-digestible "complex" carbohydrate that is no better--worse, in fact--than table sugar.

So why not eat these non-wheat grains all you want? If they don't cause appetite stimulation, behavioral outbursts in children with ADHD, addictive consumption of foods, dementia (i.e., gluten encephalopathy), etc., why not just eat them willy nilly?

Because they still increase blood sugar. Conventional wisdom is that these foods trend towards having a lower glycemic index than, say, table sugar, meaning it raises blood glucose less.

That's true . . . but very misleading. Oats, for instance, with a glycemic index of 55 compared to table sugar's 59, still sends blood sugar through the roof. Likewise, quinoa with a glycemic index of 53, will send blood sugar to, say, 150 mg/dl compared to 158 mg/dl for table sugar--yeah, sure, it's better, but it still stinks. And that's in non-diabetics. It's worse in diabetics.

Of course, John Q. Internist will tell you that, provided your blood sugars after eating don't exceed 200 mg/dl, you'll be okay. What he's really saying is "There's no need for diabetes medication, so you're okay. You will still be exposed to the many adverse health consequences of high blood sugar similar to, though less quickly than, a full diabetic, but that's not my problem."

In reality, most people can get away with consuming some of these non-wheat grains . . . provided portion size is limited. Beyond limiting portion size, there are two ways to better manage your carbohydrate sensitivity to ensure that metabolic distortions, such as high blood sugar, glycation, and small LDL particles, are not triggered.

More on that in the future.


Lipoproteins . . . zero!

With the recent refinements in our approach to correction of the lipoprotein abnormalities that lead to coronary plaque and heart disease risk, I have been witnessing more and more people achieve:

Small LDL particles 0 nmol/L
Lipoprotein(a) 0 nmol/L



For instance, Ted, a 58-year old man I saw in the office today started with:

Small LDL 1673 nmol/L
Lipoprotein(a) 219 nmol/L


In other words, both small LDL particles and lipoprotein(a) are being knocked down to zero values.

Incidentally, the combination of lipoprotein(a) with small LDL is among the most atherogenic (atherosclerotic plaque-causing) patterns known. Despite his athletic, slender build and avoidance of unhealthy habits, Ted's heart scan score was 922--very high.

So Ted followed the diet I advocate, i.e., wheat elimination followed by elimination of cornstarch, oats, and sugars; high-dose fish oil (total daily EPA + DHA of 6000 mg/day); vitamin D supplementation sufficient to achieve a 25-hydroxy vitamin D level of 60-70 ng/ml; iodine supplementation; and thyroid normalization which, in Ted's case, required supplementation with the T3 thyroid hormone, liothyronine, at a small dose.

The result:

Small LDL particles 0 nmol/L
Lipoprotein(a) 0 nmol/L


Not everybody, of course, is achieving these incredible--and previously impossible--results. But the numbers are growing. Ted is the third person to achieve zeroes all around, in fact, over the past 10 days.

Heart disease prevention is getting better and more powerful every day. And it ain't all about Lipitor and low-fat.


Chocolate almond biscotti

Biscotti are twice-baked biscuits or cookies that are perfect for dipping into coffee, latté, or espresso. These wheat-free, low-carb biscotti are rich with the taste of chocolate and almonds.

Yield: approximately 15 biscotti



Ingredients:

2 cups almond meal
½ cup chopped walnuts
1/4 cup cocoa powder (undutched)
½ cup dark chocolate chips
Sweetener equivalent to ½ cup sugar (e.g., liquid stevia, Truvia)
½ cup ricotta cheese, room temperature (replace with coconut milk if lactose intolerant)
4 tablespoons butter, melted (replace with coconut oil if lactose intolerant)
2 large eggs
¼ cup milk, unsweetened almond milk, or soy milk
¼ cup almond, peanut, or sunflower seed butter, room temperature

Preheat oven to 350º F.

Mix almond meal, walnuts, sweetener, cocoa powder, and chocolate chips in bowl. Mix in ricotta, butter, eggs, milk, and nut butter and blend by hand thoroughly.

Pour mix onto baking pan lined with parchment paper or greased with coconut oil or other oil. Shape into loaf approximately 1 inch deep and 3½ to 4 inches in width. Place in oven and bake for 40 minutes.

Remove loaf and allow to cool 15 minutes. Slice into approximately ¾-inch widths and lay each biscotto on its side on baking pan. Put back in oven for 10 minutes.

Remove pan and flip biscotti over. Place back in oven and bake an additional 5 minutes. Remove and cool.

Optional: For a little dark chocolate "icing":
Melt 3-4 oz semisweet or dark chocolate in microwave (in 15 second increments until melted) or in metal bowl placed in heated water. Stir in 1-2 teaspoons butter.
Dip each biscotti into melted chocolate mix or drizzle chocolate mixture over top of each biscotto.

Sun green tea

Here's a great way to enjoy the health benefits of green tea during the summer: sun green tea.


I dropped two green tea bags into approximately one-half gallon of cold water in a clear glass jar. I placed the jar in the sun (with top on) for four hours, then brought it into the kitchen. I served it as iced tea with a slice of lemon and mint leaf.

The sun green tea was a smoother than standard green tea brewed with hot water. Ordinarily, if you brew hot green tea for more than 3-5 minutes, it becomes more bitter or tannic. This sun green tea, despite steeping for four hours, was not the least bit bitter or tannic.

The green tea lasted well for about 48 hours, more than enough to enjoy several glasses per day.

Calling all super-duper weight losers!






Have you lost at least 1/2 your weight, e.g., 300 lbs down to 150 lbs? If you have, I have a major national magazine editor looking to talk to you.

If you have gone wheat-free and/or followed the dietary advice offered here in The Heart Scan Blog or through the Track Your Plaque program and would be willing to share your story, please let me know by commenting below. While losing half your body weight is not necessarily a requirement for health, it makes an incredibly inspiring story for others.

If we use your story, I will set aside a copy of my soon-to-be-released book, Wheat Belly.

Lp(a): Be patient with fish oil

High-dose omega-3 fatty acids from fish oil has become the number one strategy for reduction of lipoprotein(a), Lp(a), in the Track Your Plaque program for gaining control over coronary plaque and heart disease risk.

The original observations made in Tanzanian Bantus in the Lugalawa Study by Marcovina et al first suggested that higher dietary exposure to fish and perhaps omega-3 fatty acids from fish were associated with 40% lower levels of Lp(a). Interestingly, higher omega-3 exposure was also associated with having the longer apo(a) "tails" on Lp(a) molecules, a characteristic associated with more benign, less aggressive plaque-causing behavior.

Of course, the 600+ fish- consuming Bantus in the study consumed fish over a lifetime, from infancy on up through adulthood. So what is the time course of response if us non-Bantus take higher doses of fish oil to reduce Lp(a)?

We have been applying this approach in the Track Your Plaque program and in my office practice for the past few years. To my surprise, the majority of people taking 6000 mg per day of omega-3 fatty acids, EPA and DHA, will drop Lp(a) after one year.  Some have required two years.  Therefore checking Lp(a) after, say, 3 or 6 months, is nearly useless. (An early response does, however, appear to predict a very vigorous 1-2 year response.)

I'm sure that there is an insightful lesson to be learned from the incredibly slow response, but I don't currently know what it is.  But this strategy has become so powerful, despite its slow nature, that it has allowed many people to back down on niacin.

Baby your pancreas

There it is, sitting quietly tucked under your diaphragm, nestled beneath layers of stomach and intestines, doing its job of monitoring blood sugar, producing insulin, and secreting the digestive enzymes that allow you to convert a fried egg, tomato, or dill pickle into the components that compose you.

But, if you've lived the life of most Americans, your pancreas has had a hard life. Starting as a child, it was forced into the equivalent of hard labor by your eating carbohydrate-rich foods like Lucky Charms, Cocoa Puffs, Hoho's, Ding Dongs, Scooter Pies, and macaroni and cheese. Into adolescent years and college, it was whipped into subservient labor with pizza, beer, pretzels, and ramen noodles. As an adult, the USDA, Surgeon General's office and other assorted purveyors of nutritional advice urged us to cut our fat, cholesterol, and eat more "healthy whole grains"; you complied, exposing your overworked pancreas to keep up its relentless work pace, spewing out insulin to accommodate the endless flow of carbohydrate-rich foods.

So here we are, middle aged or so, with pancreases that are beaten, worn, hobbling around with a walker, heaving and gasping due to having lost 50% or more of its insulin-producing beta cells. If continued to be forced to work overtime, it will fail, breathing its last breath as you and your doctor come to its rescue with metformin, Actos, Januvia, shots of Byetta, and eventually insulin, all aimed at corralling the blood sugar that your failed pancreas was meant to contain.

What if you don't want to rescue your flagging pancreas with drugs? What if you want to salvage your poor, wrinkled, exhausted pancreas, eaking out whatever is left out of the few beta cells you have left?

Well, then, baby your pancreas. If this were a car with 90,000 miles on it, but you want it to last 100,000, then change the oil frequently, keep it tuned, and otherwise baby your car, not subjecting it to extremes and neglect to accelerate its demise. Same with your pancreas: Allow it to rest, not subjecting it to the extremes of insulin production required by carbohydrate consumption. Don't expose it to foods like wheat flour, cornstarch, oats, rice starch, potatoes, and sucrose that demand overtime and hard labor out of your poor pancreas. Go after the foods that allow your pancreas to sleep through a meal like eggs, spinach, cucumbers, olive oil, and walnuts. Give your pancreas a nice back massage and steer clear of "healthy whole grains," the nutritional equivalent of a 26-mile marathon. Pay your pancreas a compliment or two and allow it to have occasional vacations with a brief fast.

Bread equals sugar

Bread, gluten-free or gluten-containing, in terms of carbohydrate content, is equivalent to sugar.

Two slices of store-bought whole grain bread, such as the gluten-free bread I discussed in my last post, equals 5- 6 teaspoons of table sugar:








 

 

 

 

 

 

 

 

Some breads can contain up to twice this quantity, i.e., 10-12 teaspoons equivalent readily-digestible carbohydrate.

Gluten-free carbohydrate mania

Here's a typical gluten-free product, a whole grain bread mix. "Whole grain," of course, suggests high-fiber, high nutrient composition, and health.



 

 

 

 

 

 

 

 

What's it made of? Here's the ingredient list:
Cornstarch, Tapioca Starch, Whole Grain Sorghum Flour, Whole Grain Teff Flour, Whole Grain Amaranth Flour, Soy Fiber, Xanthan Gum, Soy Protein, Natural Cocoa and Ascorbic Acid

In other words, carbohydrate, carbohydrate, carbohydrate, carbohydrate and some other stuff. It means that a sandwich with two slices of bread provides around 42 grams net carbohydrates, enough to send your blood sugar skyward, not to mention trigger visceral fat formation, glycation, small LDL particles and triglycerides.

Take a look at the ingredients and nutrition facts on the label of any number of gluten-free products and you will see the same thing. Many also have proud low-fat claims.

This is how far wrong the gluten-free world has drifted: Trade the lack of gluten for a host of unhealthy effects.

Gluten-free is going DOWN

The majority of gluten-free foods are junk foods.

People with celiac disease experience intestinal destruction and a multitude of other inflammatory conditions due to an immune response gone haywire. The disease  is debilitating and can be fatal unless all gliadin/gluten sources are eliminated, such as wheat, barley, and rye.

A gluten-free food industry to provide foods minus gliadin/gluten has emerged, now large enough to become an important economic force. Even some Big Food companies are getting into the act, like Kraft, that now lists foods they consider gluten-free.

So we have gluten-free breads, cupcakes, scones, pretzels, breakfast cereals, crackers, bagels, muffins, pancake mixes and on and on. All are made with ingredients like brown rice flour, cornstarch, tapioca starch, and potato starch. Occasionally, they are made with amaranth, teff, or quinoa, other less popular, but gluten-free, grains.

Problem: These gluten-free ingredients, while lacking gliadin and gluten, make you fat and diabetic. They increase visceral fat, cause blood sugar to skyrocket higher than nearly all other foods (even higher than wheat, which is already pretty bad), trigger formation of small LDL and triglycerides, and are responsible for exaggerated postprandial (after-eating) lipoprotein distortions. They cause heart disease, cataracts, arthritis, and a wide range of other conditions, all driven by the extreme levels of glycation they generate.

Eliminating all things wheat from the diet is one of the most powerful health strategies I have ever witnessed. But replacing lost wheat with manufactured gluten-free foods is little better than replacing your poppyseed muffin with a bowl of jelly beans.

Whenever we've relied on the food industry to supply a solution, they've managed to bungle it. Saturated fat was replaced with hydrogenated fat and polyunsaturates; sucrose replaced with high-fructose corn syrup. Now, they are replacing wheat gluten-containing foods with junk carbohydrates.

For this reason, I am bringing out a line of recipes and foods that will be wheat gliadin/gluten-free, do NOT contain the junk carbohydrates that gluten-free foods are made of, and are genuinely healthy. They are tasty, to boot.

The gluten-free industry needs to smarten up. Having a following that is free of cramps and diarrhea but are obese, diabetic, and hobbling on arthritic knees and hips is good for nobody.
All posts by william-davis

Family lessons

Lou was recovering from his 3rd bypass operation. This third go-round left him weaker, slower, less quick on the rebound. In fact, he was lucky to have survived.

At 71 years old, Lou went a good 15 years since his second bypass, another 10 years prior to his first bypass at age 46.

In the days immediately following Lou's bypass, I had a chance to talk to his son, who stayed at his Dad's bedside while Lou struggled through post-op recovery.

"Did your Dad tell you about why this has happened, what caused his heart disease?" I asked.

"Sort of. He just said I should get checked," Lou's son, Aaron, replied.

"Did he mention the lipoprotein(a) pattern he has?"

"No. He never mentioned anything like that. He just said to get checked."

That's how it gets played out more often than not: Mom or Dad has a heart attack, stents, or (3rd) bypass, the children are told to get checked. Getting "checked" assumes that the doctor knows what to check for.

In Lou's case, the reason why he was in the hospital getting his 3rd (and final) bypass was lipoprotein(a), along with genetically-determined small LDL particles, low HDL, a postprandial (after-eating) disorder, hypertension, and borderline diabetes, not to mention vitamin D deficiency, omega-3 fatty acid deficiency, and marginal thyroid function. (Lou, a retired city employee, had showed only marginal interest in correcting these patterns. While he accepted medications, he proved unwilling to engage in the diet and nutritional supplement strategies required to correct his patterns.)

So Lou's 3rd bypass operation provided a moment of reflection for Aaron to ask: "Could I share the fate of my Dad?" With Lou's combination of genetic patterns, there was at least a 75% likelihood that he did. Sadly, going to his doctor would likely yield little more than a cholesterol panel, a question about smoking, and a prescription for Lipitor.

Just getting "checked" would be, more than likely, a recipe for disaster for Aaron: heart disease in his 40s or 50s. That's why you need to take control over this sad state of affairs and ask--no, insist--that an effort be made to determine whether you might share your parents' fate.

Look like Jimmy Stewart


"This diet works great," Don declared. "But I think I've lost too much weight."

At 67 years old and 5 ft. 11 inches, Don began the program weighing 228 lbs (BMI 31.9). Because of high triglycerides, high blood sugar, high c-reactive protein, and excessive small LDL, I instructed Don to eliminate all wheat products from his diet, along with cornstarch and sweets. His intake of lean meats, eggs, vegetables, oils, raw nuts, etc. was unlimited.

Don now weighed 194 lbs, down 34 lbs over 6 months (BMI 27.1). Triglycerides, blood sugar, blood pressure, and well-being had improved dramatically; small LDL, however, had dropped only 30%--still room for improvement.

"My friends say I'm too skinny. They ask if I have cancer!"

I've heard this many times: Someone loses weight in a relatively short period of time and friends and family tell you you're too skinny. "It must be cancer. Nobody loses weight like that."

Unfortunately, many Americans have forgotten what normal looks like. Normal is certainly not a 190-lb, 5 ft 4 in woman, nor is it a 228 lb, 5 ft 11 inch man. But Americans have put on so much weight that the prevailing view of what constitutes "normal" weight has been revised upward. Normal is closer to what we see in old movies from the 1940s and '50s with people like Jimmy Stewart and Donna Reed. That's what we are supposed to look like.

So Don actually remains mildly overweight but is judged as "too skinny," or even cancer-ridden, by friends and family.

Ignore such comments. As you lose pounds and approach a truly desirable weight, realize that you are returning to the normal state, not the vision of "normal" now held by most Americans.

Getting vitamin D right

Vitamin D is, without a doubt, the most incredible "vitamin"/prohormone/neurosteroid I have ever encountered. Frankly, I don't know how we got anything accomplished in health pre-D.

Unfortunately, people I meet rarely take their vitamin D in a way that accomplishes full restoration of vitamin D blood levels. It really isn't that tough.

Here's a list of common tripping points with vitamin D:

"I take vitamin D: 1000 units a day."
This is probably the most common mistake I see: Taking a dose that is unlikely to yield a desirable blood level. (We use 60-70 ng/ml of 25-hydroxy vitamin D as our target.) Most men and women require 6000 units per day to achieve this level. There is substantial individual variation, however, with an occasional person needing much more, a rare person requiring as little as 1000 units.


"I bought some vitamin D on sale. They were white tablets."
Time and again, patients in my office who initially have had successful vitamin D replacement, despite being reminded that only oil-based forms should be taken, switch to tablets. While they initially showed a 25-hydroxy vitamin D blood level, for instance, of 67 ng/ml on 8000 units per day with an oil-based capsule, they switch to a tablet form and the next blood level is 25 ng/ml. In other words, tablets are very poorly or erratically absorbed.

I have had people use tablets successfully, however, by taking their vitamin D tablets with a teaspoon of oil, e.g., olive oil. Oil is necessary for full absorption.


"I'm going to Florida. I'll stop my vitamin D because I'm going to lay in the sun."
Wrong. 90% of adults over 40 years old have lost the majority of their ability to activate vitamin D in the skin. A typical response might be an increase in blood level from 25 to 35 ng/ml--a 10 ng increase with a dark brown tan.

There is an occasional person who, with sun exposure, increases blood levels substantially. This can occur in both fair-skinned and dark-skinned people, though I've never seen it happen in an African-American person. The occasional person who maintains the ability to convert vitamin D with sun exposure, or young people, should seasonally adjust their vitamin D dose, e.g., 6000 units winter, 3000 units summer, or some other regimen that maintains desirable blood levels. You can see that monitoring blood levels (we check levels every 6 months for the first 2 years) is crucial: You cannot know what your vitamin D needs are unless you assess 25-hydroxy vitamin D levels.


"I drink plenty of milk. I don't think I need to take vitamin D."
Oh, boy. This is so wrong on so many levels.

First of all, no adult should be drinking plenty of cow's milk. (A discussion for another day.) Second of all, cow's milk averages 70 units of vitamin D, often the D2 form (ergocalciferol), per 8 oz. Even if the FDA-mandated 100 units per day were present, an average adult dose of 6000 units would require 60 glasses of milk per day. Can you say "diarrhea"?

Likewise, other food sources of vitamin D, such as fish (300-400 units per serving) and egg yolks (20 units per yolk), are inadequate. This makes sense: Humans are not meant to obtain vitamin D from food, but from sun exposure over a large body surface area. And this is a phenomenon that is meant to occur only in the youthful, ensuring that nature takes its course and us older folks get old and make way for the young (i.e., unless we intervene by taking vitamin D supplements).


"My doctor said that my vitamin D blood level was fine. It was 32 ng/ml."

Let's face it: By necessity, your overworked primary care physician, who manages gout, hip arthritis, migraine headaches, stomach aches, prostate enlargement, H1N1, depression, etc., is an amateur at nearly everything, expert in nothing. Nobody can do it all and get it right. Likewise vitamin D. The uncertain primary care physician will simply follow the dictates of the laboratory form that specifies "30-100 ng/ml" as the "normal" or "reference range." Unfortunately, the laboratory often quotes population distributions of a lab measure, not an ideal or desirable level.

To illustrate the folly of population distributions of a measure, imagine you and I want to know what women weigh. We go to a local mall and weigh several thousand women. We tally up the results and find that women weigh 172 lbs +/- 25 lbs (the mean +/- 2 standard deviations). (That's true, by the way.) Is that desirable? Of course it isn't. Population average or population distribution does not necessarily mean ideal or desirable.


"My husband's doctor said he should take 4000 units per day. So I just take the same dose."
That would be fine if all adults required the same dose. However, individual needs can vary enormously. A dose that is grossly insufficient for one person may be excessive for another. Once again, vitamin D dose needs can be individualized by assessing 25-hydroxy vitamin levels in the blood.


"I don't need to take vitamin D. I already take fish oil."
I suspect this mistaken belief occurs either because people confuse fish oil with cod liver oil, which does contain some vitamin D. (Cod liver oil is not the best source of vitamin D, mostly because of the vitamin A content; also a discussion for another time), or because they've heard that eating fish provides vitamin D. However, fish oil capsules do not contain vitamin D unless it is added, in which case it should be prominently and explicitly stated on the label.


"I don't have to take vitamin D. It's summer."

For most people I know, if it's a bright, sunny July day, where are they likely to be? In an office, store, or home--NOT lying in the sun with a large body surface area exposed. Also, most people expose no more than 5-10% of surface area in public. I doubt you cut the grass in a bathing suit. Because of modern indoor lifestyles and fashion, the majority of adults need vitamin D supplementation year-round.


I advise everyone that gelcap vitamin D is preferable. Some, though not all, liquid drop forms have also worked. Take a dose that yields desirable blood levels. And blood levels of 25-hydroxy vitamin D are ideally checked every 6 months: in summer and in winter to provide feedback on how much sun activation of D you obtain.

If your doctor is unwilling or unable to perform vitamin D testing, fingerstick vitamin D test kits can be obtained from Track Your Plaque.

Jimmy Moore's thyroid adventure

My friend, Jimmy Moore of Living La Vida Low Carb, describes his thyroid experience here.

As Jimmy points out, he was looking for a way to jump-start a 50-lb weight loss. In my experience, low thyroid hormone levels ("hypothyroidism") are an exceptionally common cause for weight gain. Correcting even marginal hypothyroidism can facilitate weight loss, often resulting in 10 or more pounds of weight loss within the first month.

Unfortunately, Jimmy's thyroid hormone panel proved normal: TSH 1.3, thyroid hormones free T3 and free T4 in the mid- to upper-half of the reference range.

I say "unfortunately" because it is really an easy, inexpensive, and benign solution for losing weight. (I don't, of course, wish that Jimmy or anyone else develops a thyroid condition. But it really can provide gratifying weight loss results when thyroid function is low.) Jimmy might consider taking his oral temperature first thing in the morning as another means of assessing the adequacy of thyroid function.

Perhaps you will be luckier than Jimmy and have thyroid dysfunction that can be corrected and jump-start your weight loss program. Fingerstick thyroid test kits like the one Jimmy used are available here from Track Your Plaque.

What's that in your mouth?




Fat = triglycerides

In other words, eat fat, whether it's saturated, hydrogenated, polyunsaturated, or monounsaturated, and blood levels of triglycerides will go up over the next 6 hours. This remains true if there are carbohydrates in the meal, or if there are NO carbohydrates in the meal. It also remains true if you chronically consume fats.

While fats are the primary determinant of postprandial (after-eating) triglycerides, carbohydrates are the primary determinant of fasting triglycerides.

So, if your triglycerides are high on a fasting cholesterol (lipid) panel, it's most likely because you overconsume carbohydrates.


Thanks to cartoonist Eli Stein, who has generously allowed me to reprint his artwork on these pages. Mr. Stein has published his work in dozens of magazines and newspapers, including the Wall Street Journal, Barron's, and Good Housekeeping. More of his work can be found at Eli Stein Cartoons.

De Novo Lipo-what?

Humans have limited capacity to store carbohydrates. Beyond the glucose and glycogen in our blood and tissues, we have relatively little carbohydrate to draw from in time of energy need. That's why long-distance runners and triathletes have to carry sugar sources to keep blood sugar from plummeting.

Fat, of course, is different. We have virtually unlimited capacity to store energy as fat.

Because we have limited carbohydrate storage capacity, what can the body do with the excessive quantities of carbohydrates that Americans ingest? What becomes of a bagel for breakfast, wheat crackers for snacks, a whole wheat sandwich for lunch, pretzels, and whole wheat pasta that many people eat every day, not to mention the chips, soft drinks, and juices?

Excess carbohydrates are diverted to an interesting metabolic pathway called de novo lipogenesis (DNL). This refers to the liver's ability to make triglycerides from excessive carbohydrates in the diet. Triglycerides are packaged for release into the blood as VLDL. VLDL, in turn, interacts with other lipoproteins, creating small LDL particles, reduced HDL and smaller, less protective HDL. High VLDL will be measured on a standard cholesterol panel as higher triglycerides.

A University of California (Berkeley, San Francisco) group has done much of the work describing DNL.

A diet weighed towards carbohydrates, especially if 50% or greater calories are carbohydrate, is sufficient to provoke plenty of DNL, even in slender people. DNL is a big part of the reason why low-fat (and, thereby, high-carbohydrate) diets result in higher triglycerides. DNL really gets turned on many-fold if the carbohydrates are "simple," rather than "complex."

Overweight people, however, can demonstrate five-fold greater DNL even with lesser quantities of carbohydrate intake (e.g., 40% fat, 46% carbohydrate, 14% protein):





From Schwarz et al 2003. Mean (± SEM) fractional de novo lipogenesis in lean normoinsulinemic (NI), obese NI, and obese hyperinsulinemic (HI) subjects after 5 d of consuming a high-fat, low-carbohydrate diet and in different lean NI and obese HI subjects after 5 d of consuming a low-fat, high-carbohydrate diet. Values with different superscript letters are significantly different.


Excessive carbohydrates, a la standard low-fat diets, are good for nobody. The concept of de novo lipogenesis fills in a theoretical hole that now explains why people who eat carbohydrates have higher triglycerides, VLDL, and, eventually, insulin resistance and diabetes.

Gretchen's postprandial diet experiment II

I previously posted Gretchen's postprandial diet experiment, in which she consumed a low-fat diet for a day, followed by a low-carbohydrate diet for a day. Grethen monitored blood glucose and triglycerides with fingerstick checks. (Blood glucose can be checked on any widely available glucose monitor; triglycerides can be monitored with the Cardiochek device.)

Let's now discuss what happened.

On the low-carb, high-fat day, there was an initial surge in triglycerides to 250 mg/dl late morning, followed by a secondary peak several hours following dinner. Because fat is mostly triglycerides, Gretchen's high-fat (sausage, bacon, butter, whole-fat yogurt) breakfast provided a large quantity of triglycerides that needed to be absorbed. This generally occurs over approximately 6 hours, varying depending on body weight, how accustomed you are to fat, activity level during the day, the kind of fat in the meal. The high content of saturated fat in Gretchen's high-fat breakfast likely caused the somewhat slower drop in triglycerides over approximately 7 1/2 hours.

As Gretchen herself had noted, triglycerides the following day were lower, a typical low-carb response. Blood sugar throughout showed only minor variation, with only small postprandial increases.

Thus, Gretchen experienced what we'd expect with a low-carb, high-fat diet: an initial high surge in triglycerides, followed by a decline in fasting levels, while blood sugar shows a normal contour.







Now, the more confusing low-fat experience:



Blood glucose makes a striking peak at 200 mg/dl after the low-fat breakfast of pasta and rice, in contrast to the low-carb breakfast. Triglycerides behaved very differently from the low-carb experiment: While there was no initial postprandial surge, there was a late surge developing 6-24 hours later. The late surge continued into the next day, with fasting levels the following morning (210 mg/dl) exceeding the starting triglyceride level (60 mg/dl).

The one potentially confusing aspect of all this is Gretchen's late rise in triglycerides on the low-fat diet. This phenomenon is due to something called de novo lipogenesis, or the liver's conversion of carbohydrates to triglycerides that occurs when an excessive carbohydrate load comes through diet. Because the human body cannot store anything beyond a minor quantity of carbohydrates (as glucose and glycogen), carbohydrates are converted to fats.

Another factor causing the late triglyceride increase is insulin resistance, given the high blood sugar response. When insulin resistance is present, the activity of the enzyme, lipoprotein lipase, is reduced. Less lipoprotein lipase activity allows slower VLDL degradation, allowing VLDL (and thereby triglycerides contained in VLDL) to "stack up" in the blood. Thus, the higher triglycerides late after eating and into the next morning.

One issue to be aware of: Acute responses can differ from chronic responses. In other words, had Gretchen had the luxury (and time and money) to conduct the experiment over, say, 4 weeks, rather than a single day, there would be somewhat different responses. The best data on this come from Dr. Jeff Volek of the University of Connecticut, in which 4 weeks of low-carbohydrate eating modify fasting and postprandial responses over time.

Several conclusions can be made from Gretchen's experience:

1) Low-carb, high-fat acutely generates extravagant postprandial triglyceride responses.
2) Low-fat causes a late triglyceride surge and higher fasting triglycerides.
3) Low-fat leads to high blood sugars and, by implication, diabetes.


Both the low-carb and the low-fat responses are undesirable, both leading to increased risk for heart disease. Which is worse? I believe that low-fat is more destructive, since it leads over time to both high triglycerides and diabetes, while low-carb/high-fat only leads to postprandial triglyceride surges, at least acutely.

How to best balance the responses to reduce risk for heart disease? That's a discussion for future.


Again, my thanks to Gretchen and the substantial amount of effort that went into generating these numbers. More of Gretchens' own writing can be found on her blogs:
http://wildlyfluctuating.blogspot.com
http://www.healthcentral.com/diabetes/c/5068

A wheat-free 2010

A Heart Scan Blog reader sent this fascinating description of his wheat-free adventure.

Whenever I discuss this notion of going wheat-free and the incredible health effects that develop, I invariably receive comments or emails saying something like "I eat wheat and feel fine. That can't be true." The problem is that not everybody needs to go wheat-free. 20-30% of people can include wheat in their diet and suffer little more than weight gain, some not at all.

But stories like Michael's (below) are commonplace in my experience. I've had many patients who, at first, refused to believe that wheat exposure might be the underlying cause for health struggles. But they finally give it a try and find that rashes, arthritis, acid reflux, irritable bowel symptoms, mood swings, anger, etc. are miraculously improved or gone.

Anyway, hear what Michael has to tell us:


Dr. Davis,

I want to thank you. I was browsing the web a while back and happened to stumble upon your blog post about wheat belly. The first thing that caught my attention was that I thought you had somehow gotten a photograph of me. The young man you posted an image of looked exactly like me. So I read what you had to say. After reading, I thought "Four weeks isn’t so bad. I think I can handle this."

It has now been nine weeks and all I can say is that I am completely amazed. Let me say first that twice in the past twenty years I have been tested for allergies. The first time I was tested I showed a slight reaction to Timothy Grass, but not enough to cause me any problems. The second testing I did not show a reaction to anything. So, I have always assumed that my chronic sinus problem were due to sensitivities to environmental pollutions. Now I am not so sure. I would like to list for you everything that has happened to me since I eliminated wheat from my diet.

1. I have lost a total of 12 pounds in the last 9 weeks.
2. I have lost 1 ¼ inches of belly fat
3. I have lost a tremendous amount of fat from my neck.
4. My entire life I have had problems with oily hair. I could wash my hair and three hours later I looked as if I hadn’t washed in a week. Now my hair stays clean and soft for two to three days without shampoo.
5. My hair was always flat and stringy. Now it has lots of body.
6. I used to have thick layers of dry skin on my scalp. It would come loose in chunks as large as a fingernail. That dry scalp is gone.
7. I used to have dry flaky skin that seemed to secrete oil. That no longer happens. My skin is now soft and smooth.
8. I have lived with bad acne for at least 35 years. Now it is hard to find a pimple on my body.
9. I have always had to fight dehydration. That is no longer a problem.
10. I used to drink two large cups of coffee every morning just to be able to function. I now have enough energy that I have eliminated caffeine from my diet.
11. I sleep more soundly than ever before and my dreams are clear and vivid.
12. My thought processes are more active and clear than they have ever been.
13. My chronic sinus issue is now a thing of the past.
14. I used to have problems with getting the “shakes” if I had gone more than a couple of hours without eating. It was as if I was suffering from low blood sugar. I would even be afraid that I would pass out. Now all I feel is hunger. I can go all day without eating and never feel in danger of losing consciousness.


Today is Thursday. This past Monday my wife and I were eating out and I ordered a burger without a bun. What I didn’t realize was that the burger would arrive covered in onion rings. I knocked the mountain of onion rings onto the plate but there were still a couple that were embedded in the cheese. I decided, what the hell, a couple of onion rings shouldn’t make that much of a difference. I will not make that mistake again anytime soon. Within 30 minutes I felt like there was a steel spike going through my left eye socket. I don’t remember ever being in that much pain. My sinuses were exploding. This morning, as I write this, I still feel the vestiges of that pain. Just enough that I know it is there. But after two and a half days, I am at least able to function again.

I owe you a debt of gratitude. You may have just saved my life. In the very least you have given me the means to improve my life in ways that I never thought possible.

Thank you so much,
Michael B.



Now, if wheat exposure can do that in Michael, what damage can it do in other people?

Personally, I previously experienced many of the same symptoms that Michael suffered, all gone with wheat elimination.

My advice: If you have any inkling that you might have a wheat sensitivity, make a New Year's resolution to stay wheat-free for 4 weeks and see whether you can feel any difference. Not everybody will, but many will be telling us about the dramatic health turnarounds they experienced.

Lipoprotein lipase and you

Lipoprotein lipase can make the difference between having heart disease and not having it. Having sky-high triglycerides or normal triglycerides. It can mean dinner hanging around for over 12 hours in the bloodstream, rather than the usual 4-6 hours.

If you take niacin, you must exercise

We use a lot of niacin in the Track Your Plaque program.

Niacin:

--Increases HDL and shifts HDL towards the large, protective fraction

--Reduces small LDL--In fact, niacin is the best treatment we have to reduce small LDL after wheat elimination and carbohydrate reduction.

--Reduces fasting and postprandial (after-eating) triglycerides

--Reduces heart attack risk by 20-28%--even as a sole agent.


But . . . niacin also triggers higher blood sugar because it partially blocks the effects of insulin (insulin "resistance").

While the net effect of niacin remains positive, the provocation of insulin resistance is not such a good thing. Can it be minimized or eliminated?

Yes, through exercise. Here's one interesting observation in obese (BMI 34.0), sedentary men given placebo, exercise, niacin (1500 mg Niaspan, once per day), or niacin + exercise:





From Plaisance et al 2008.

Blood was drawn following a high-fat meal challenge. (Yes, a high-fat challenge, not a carbohydrate challenge. In this study, there were only 17 grams carbohydrates in the test meal, but 100 grams fat. More on this in future.) Exercise consisted of walking for 50 minutes at a moderate pace one hour prior to the meal challenge.

You can see from the graph that exercise partially corrected the increased insulin level provoked by niacin.

Judging from this and other studies, exercise can help minimize the insulin-blocking effects of niacin. It doesn't take much, just moderate exercise for at least 30 minutes.

Adequate sleep can also help, since sleep deprivation is a potent trigger for insulin resistance, only worsened in the presence of niacin. Vitamin D supplementation to achieve desirable blood levels (which I define as 60-70 ng/ml) is also an effective means to minimize this effect.